It's not always a good idea for famous people to make albums. Example: William Shatner. Alternate Example: Paris Hilton. But Steve Martin, who has always been sort of vaguely known for his banjo playing, has made roots music his priority in the last four or five years and is totally nailing it. His most recent album,… »6/23/13 7:53pm 6/23/13 7:53pm